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43 Years
experience
Emergency
services
Expert Construction and Maintenance Services in Iver Heath
Established over 30 years ago, GD Amass has evolved from a painting and decorating company into a leading building services provider across London and the South of England. Our family-run business combines decades of hands-on experience with a commitment to maintaining the highest standards of craftsmanship and customer service. We pride ourselves on offering a one-stop solution for property maintenance, employing a team of Gas Safe and NICEIC-accredited professionals who deliver comprehensive services ranging from electrical installations to full-scale renovations. Our reputation is built on trust, with a loyal client base that includes private homeowners, landlords, and local authorities. We operate within a 25-mile radius of Iver Heath, serving Buckinghamshire, Middlesex, and London with the same dedication to quality that has defined our business since 1983.

Our engineers hold Gas Safe and NICEIC certifications, ensuring compliance with all current safety regulations. We offer 24/7 emergency services for critical issues like boiler failures and plumbing emergencies, while our DBS-checked team guarantees peace of mind for clients in sensitive environments. From minor repairs to large commercial projects, our approach remains consistent: expert execution, transparent communication, and competitive pricing that reflects our virtual business model with no overhead from showrooms or offices.
Services
Building Work Carpentry Electrical Services Gas Installations Plumbing Kitchen Design Bathroom Refurbishment Painting and Decorating Landlord Services Emergency Repairs
Details
  • Year established: 1983
Highlights and features
  • We have over 30 years' experience in multi-disciplinary building services
  • Our engineers hold Gas Safe and NICEIC accreditations
  • We provide 24/7 emergency response for critical repairs
  • One-stop shop covering 8+ trades under one provider
  • DBS-checked team ensures safety in residential environments
Associations and certifications
  • Gas Safe
  • NICEIC
What people say
Excellent job Real craftsmen High workmanship Spotlessly clean Transformed the flat
Services
Electrical Services
Our NICEIC-approved electricians handle all aspects of electrical work, from testing and installations to emergency repairs. We ensure compliance with BS7671 standards, providing certification for domestic and commercial properties. Our 24/7 emergency service addresses urgent electrical issues while maintaining safety and regulatory compliance.
Gas Installations
Gas Safe registered engineers deliver boiler installations, central heating systems, and emergency repairs. We specialise in power flushing, underfloor heating, and CP12 safety certificates for landlords. Our 24/7 emergency service handles gas leaks and urgent heating failures across residential and commercial properties.
Plumbing
From blocked drains to complete bathroom renovations, our certified plumbers handle all domestic and commercial requirements. We offer emergency call-outs for burst pipes and heating failures, alongside scheduled maintenance for residential care homes and rental properties across the London area.
Kitchen Design
We provide full-service kitchen installations including design consultation, plumbing connections, and electrical work. Our carpenters fit units from major brands like Magnet and Howdens, offering competitive pricing through our virtual business model while maintaining high-quality finishes and safety certifications.
Bathroom Refurbishment
Specialists in complete bathroom transformations, we manage projects from design to installation. Our services include tiling, plumbing upgrades, and accessibility modifications. We offer flexible options for clients to supply their own fixtures or use our full installation service with guaranteed quality checks.
Questions
What services does GD Amass & Sons offer?
We provide building work, electrical services, gas installations, plumbing, kitchen and bathroom renovations, painting and decorating, and emergency repairs across London and surrounding areas.
Are your engineers accredited?
Yes, our gas engineers are Gas Safe registered and our electricians hold NICEIC approvals, with all work meeting current safety regulations and certification requirements.
Do you offer emergency services?
We provide 24/7 emergency response for urgent plumbing, electrical, and heating issues with rapid call-out times across our service areas.
How long have you been in business?
We've served London and the South of England for over 30 years, established in 1983 as a family-run business with a proven track record.
What areas do you cover?
We operate within a 25-mile radius of Iver Heath, covering London, Buckinghamshire, Middlesex, Slough, Maidenhead, Watford, and Harrow.
Do you work with landlords?
Yes, we're recommended by estate agents for rental property maintenance, offering gas safety certificates, electrical inspections, and emergency repairs for residential portfolios.
Reviews (2)
Hitendra Patel
Nov 04, 2020 Report
Great service on boiler maintenance did paint flat install sink WC lino fitted cupboard door fitted but boiler stopped working froze all December and another gas leak replaced boiler and no reply
Jude Blake
Nov 15, 2019 Report
Went with Gary and team as we were doing a lot of work - internal structure, decorating, plumbing and more. Initially they were terrific, very accommodating, workmanship and work ethic to a very high level. Unfortunately when it got to the end of the job we noticed a few areas where the finish wasn't as good as we'd have liked - tv fitting and staircase painting in particular. They came back to do another round but it still wasn't good enough. After discussing the standard of finish the attitude changed - they became quite non-committal, and challenged back to us on our expectations - making us